Abstract
In multi-view video coding, since inter-view prediction has been adopted as an important coding tool which could improve coding efficiency greatly, inter-view dependency is inevitable, i.e., the distortion of the reference view (RV) picture could be propagated to the non-reference view (NRV) pictures. Therefore, in order to achieve higher coding efficiency, the inter-view dependency must be taken into account for inter-view bit allocation. In this paper, the inter-view dependency is analyzed in detail, and a rate-distortion (RD) model for NRVs is derived by taking the distortion of RV into account. Based on the derived RD model, the inter-view bit allocation is represented as a mathematical problem with an analytic form, and is solved by a convex optimization (Lagrangian Multiplier) method. Experimental results demonstrate that the RD performance and the inter-view quality consistency of the proposed method is better than existing methods, while the complexity of the proposed method is comparable with the existing methods.
Original language | English |
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Pages (from-to) | 2134-2146 |
Journal | IEEE Transactions on Multimedia |
Volume | 17 |
Issue number | 12 |
Early online date | 10 Sept 2015 |
DOIs | |
Publication status | Published - Dec 2015 |
Externally published | Yes |
Keywords
- Bit allocation
- inter-view dependency
- MV-HEVC
- rate distortion optimization